These are the basic rules if you want to critique the billionaire class: you cannot be wealthy yourself; if you’re in politics, you cannot be supported, even at the ballot box, by anyone wealthy. These strictures are rigid but not quantified; there is no “poor enough” you can be to get a pass. You could be on the minimum wage, but still be too educated, or from too middle class a family. You could give 100% of your money away, but if you said something and the world listened, you would still have the privilege of a platform.